<template>
  <div class="xtx-infinite-loading" ref="container">
    <div class="loading" v-if="loading">
      <span class="img"></span>
      <span class="text">正在加载...</span>
    </div>
    <div class="none" v-if="finished">
      <span class="img"></span>
      <span class="text">亲，没有更多了</span>
    </div>
  </div>
</template>

<script>
export default {
  props: {
    loading: {
      type: Boolean,
      default: false,
    },
    finished: {
      type: Boolean,
      default: false,
    },
  },
  mounted() {
    let obj = this.$refs.container;
    let observer = new IntersectionObserver(([{ isIntersecting }]) => {
      // 判断是否到达视口高度
      if (isIntersecting) {
        //调用请求数据的方法
        this.$emit("getList");
      }
    }, {});
    // 监听相交状态变化情况
    observer.observe(obj);
  },
};
</script>

<style scoped lang="scss">
.xtx-infinite-loading {
  .loading {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 200px;
    .img {
      width: 50px;
      height: 50px;
      background: url(../../assets/img/加载.gif) no-repeat center / contain;
    }
    .text {
      color: #999;
      font-size: 16px;
    }
  }
  .none {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 200px;
    .img {
      width: 200px;
      height: 134px;
      //   background: url(../../assets/img/none.png) no-repeat center / contain;
    }
    .text {
      color: #999;
      font-size: 16px;
    }
  }
}
</style>
